Nexus-King Salhadaar was once the ruler of the Ethereals of K'aresh, until Dimensius ravaged the Ethereal homeworld and scattered the race across the Twisting Nether. Now he is the leader of the Ethereum, a renegade sect of Ethereals who are committed to defeating Dimensius and the Void by any means necessary, including transforming into void creatures themselves. He is currently residing in the Netherstorm.

Salhadaar can be seen gorging himself on energy, untargetable. To access the fight, you must use the Protectorate Disruptor nearby Salhadaar's three Power Conduits. Each is guarded by two Ethereum Nexus-Stalkers. Once all the conduits are disrupted Salhadaar will grow to a massive size and attack. He uses Stasis often, almost randomly, on anyone in the group, even the tank. Salhadaar's other move is his Gravity Flux spell. It's short range, but it's knockback throws you a decent height into the air, so avoid the edge when fighting. At low health, Salhadaar uses a new trick: Mirror Image. This spawns two transparent copies of Salhadaar. Each copy has about 17k health. The fight is not too difficult, but will take a little time.